220191-35-5Relevant academic research and scientific papers
Gold complexes with potentially tri- and tetradentate phosphinothiolate ligands
Ortner, Kirstin,Hilditch, Louise,Zheng, Yifan,Dilworth, Jonathan R.,Abram, Ulrich
, p. 2801 - 2806 (2000)
Reactions of [Au(PPh3)Cl], (Bu4N)[AuCl4] and the organometallic gold complex [Au(damp-C1,N)Cl2] (damp- = 2-(N,N-dimethylaminomethyl)phenyl) with the potentially tri- and tetradentate proligands PhP(C6H3-SH-2-R-3)2 (H2L(1a), R = SiMe3; H2L(1b), R = H) and P(C6H4-SH-2)3 (H3L2) result in the formation of mono- or dinuclear gold complexes depending on the precursor used. Monomeric complexes of the type [AuL1Cl] are formed upon the reaction with [Au(damp-C1,N)Cl2], but small amounts of dinuclear [AuL1]2 complexes with gold in two different oxidation states, +1 and +3, have been isolated as side-products. The dinuclear compounds are obtained in better yields from [AuCl4]-. A dinuclear complex having two Au(III) centers can be isolated from the reaction of [Au-(PPh3)Cl] with H3L2, whereas from the reaction with H2L(1b) the mononuclear [Au(Ph3P)HL(1b)] is obtained, which contains a three-coordinate gold atom. Comparatively short gold-gold distances have been found in the dinuclear complexes (2.978(2) and 3.434(1) A). They are indicative of weak gold-gold interactions, which is unusual for gold(III).
